Post by Centaur on Jan 1, 2012 15:56:48 GMT -6
I’ve created a table with data for the Full Moon risings as viewed from Chicago's Adler Planetarium during 2012. The information is precise for that location, but should well serve all Chicagoland observers. It is not based on the widely published Full Moon timings given for a fictional observer at the center of the Earth that are simplistically related to the ecliptical longitude difference between the Moon and Sun.
The time given in my table for the monthly fullest Moon is that when the apparent disk of the Moon is most fully illuminated from the viewpoint of an observer at the Adler. Of course half of the time that would be with the Moon beneath the horizon and viewed with a fictional X-ray vision. However, the moonrise data on either side of the fullest Moon data is for the two risings nearest to the time of the fullest Moon. The moonrise with the greater illumination is underlined.
The Brightness factor is due to the formula of Jean Meeus, and takes into account not only the illumination, but also the distances to the Moon and Sun and the Moon’s nearness to the ecliptic at opposition. The latter consideration is important regarding the effect of the oppositional flash that greatly enhances the Moon’s brightness. This effect allows a typical Full Moon to appear twelve times brighter than a Half Moon. The greater values indicate greater brightness.
The Moon’s apparent angular diameter is given in arcminutes. The Moon’s azimuth at moonrise is based on north being 0°, east being 90° and south being 180°. The timings are all for the central time zone, either CST or CDT as appropriate.
Also I’ve recently added many graphs of interesting data on my webpages for each planet.
The moonrise table can be seen from a link near the bottom of my Moon webpage at www.CurtRenz.com/moon
The time given in my table for the monthly fullest Moon is that when the apparent disk of the Moon is most fully illuminated from the viewpoint of an observer at the Adler. Of course half of the time that would be with the Moon beneath the horizon and viewed with a fictional X-ray vision. However, the moonrise data on either side of the fullest Moon data is for the two risings nearest to the time of the fullest Moon. The moonrise with the greater illumination is underlined.
The Brightness factor is due to the formula of Jean Meeus, and takes into account not only the illumination, but also the distances to the Moon and Sun and the Moon’s nearness to the ecliptic at opposition. The latter consideration is important regarding the effect of the oppositional flash that greatly enhances the Moon’s brightness. This effect allows a typical Full Moon to appear twelve times brighter than a Half Moon. The greater values indicate greater brightness.
The Moon’s apparent angular diameter is given in arcminutes. The Moon’s azimuth at moonrise is based on north being 0°, east being 90° and south being 180°. The timings are all for the central time zone, either CST or CDT as appropriate.
Also I’ve recently added many graphs of interesting data on my webpages for each planet.
The moonrise table can be seen from a link near the bottom of my Moon webpage at www.CurtRenz.com/moon